Electrospun hydrogen manganese oxide nanofibers as effective adsorbents for Li+ recovery from seawater

被引：35

作者：

Han, Yosep ^{[1
,2
]}

Kim, Seongmin ^{[1
]}

Yu, Sooyoun ^{[3
]}

Myung, Nosang V. ^{[3
]}

Kim, Hyunjung ^{[2
]}

机构：

[1] Korea Inst Geosci & Mineral Resources KIGAM, Resources Recovery Res Ctr, Mineral Resources Res Div, 124 Gwahak Ro, Daejeon 34132, South Korea

[2] Chonbuk Natl Univ, Dept Mineral Resources & Energy Engn, 567 Baekje Daero, Jeonju 54896, Jeonbuk, South Korea

[3] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2020年 / 81卷

基金：

新加坡国家研究基金会;

关键词：

Lithium ion-sieve; H+-exchanged manganese oxide nanofibers; Li(+)adsorption; Li(+)recovery; Seawater; LITHIUM ION; PORE STRUCTURE; ADSORPTION; SORPTION; LIMN2O4; OPTIMIZATION; EFFICIENT; REMOVAL; DYE;

D O I：

10.1016/j.jiec.2019.08.061

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Highly porous hydrogen manganese oxide (HMO) nanofibers were fabricated by combining electrospinning, calcination, and ion exchanges, and their lithium (Li) recovery performance was systematically compared to other adsorbent types (i.e., nanoparticles and porous microbeads with equivalent properties). In seawater, the HMO nanofibers exhibited an excellent Li+ adsorption capacity (18.8 mg/g) with greater Li+ selectivity over other adsorbents. These might be attributed to the high number of macropores in the nanofiber, which facilitated the inward diffusion of Li+ and enhanced the accessibility of activated sites. Moreover, the Li+ recovery efficiency of the nanofibers remained approximately 95% after 20 recovery cycles. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：115 / 123

页数：9

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